27795178240 has 72 divisors (see below), whose sum is σ = 66713094000. Its totient is φ = 11095535616.

The previous prime is 27795178183. The next prime is 27795178249. The reversal of 27795178240 is 4287159772.

It is not an unprimeable number, because it can be changed into a prime (27795178249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616962 + ... + 660478.

It is an arithmetic number, because the mean of its divisors is an integer number (926570750).

Almost surely, 2^27795178240 is an apocalyptic number.

27795178240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27795178240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33356547000).

27795178240 is an abundant number, since it is smaller than the sum of its proper divisors (38917915760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27795178240 is an equidigital number, since it uses as much as digits as its factorization.

27795178240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44037 (or 44023 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 27795178240 in words is "twenty-seven billion, seven hundred ninety-five million, one hundred seventy-eight thousand, two hundred forty".